Raj Mahajan took the reins at Allston Trading as CEO in September 2012 and has spent a good deal of his time looking at the issue of high frequency trading (HFT). Allston has been one of the proprietary trading firms who has been willing to publicly discuss HFT, regulation and the future of that form of trading. Mahajan spoke with JLN’s editor-in-chief Jim Kharouf about HFT as well as the business challenges and opportunities for prop firms. Raj Mahajan Resources Raj Mahajan on MarketsWiki (link) Allston Trading on MarketsWiki (link) High Frequency Trading on MarketsWiki (link) High Frequency Trading Regulation…